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Laminated glass is typically utilized in areas in the home most susceptible to injury from human impact such as bathrooms, doors, around staircases and in areas close to the flooring (it meets the requirements of 'security glass' that is mandated for use in these areas by Australian Basic AS 1288 Glass in structures).
Toughened glass has been 'tempered' by being reheated and rapidly cooled again. This procedure makes it much stronger than basic glass it can resist higher impact loads before breaking. It likewise makes it safer since, when it does shatter, it burglarizes many small cubic pieces instead of unsafe fragments.
However, toughened glass has no thermal or acoustic benefits over other glass of the same toning or thickness. Secondary glazing is where single-glazed windows are retrofitted with a transparent acrylic or glass sheet connected to the within of the frame or openable sash with a secondary frame or with magnetic strips.
Secondary glazing will not carry out also thermally as a made IGU, because it is difficult to absolutely seal the border, but it can provide good noise control. Window movies are a thin polymer film consisting of an absorbing dye or reflective metal layer, with an adhesive backing. They adhere to your glazing to alter its colour or make it reflective.
Applied to existing glass, some window films can cut in half the overall SHGC of the window by absorbing and/or showing solar radiation. This can be particularly beneficial in hotter climates where cooling is the main issue, or on east and west elevations directly exposed to long periods of sunshine. Window movies might also minimize noticeable light transmittance.
For this factor, it is normally best to use a recognized installer of window film. Frames have a significant effect on the thermal performance of windows and doors, because energy can be gotten and lost through the frame, in addition to through the glass. Different kinds of frame will permit different levels of heat gain and loss, so cautious option of frame is very important for reliable passive design.
Nevertheless, aluminium is also an excellent conductor of heat and will decrease the insulating worth of a glazing unit, unless specifically engineered to lower this. A 'thermally broken' frame is made up of 2 aluminium sections connected by a structural insulator (normally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and minimizes the heat streaming through the frame.
Timber frames are a good natural insulator that can match some house designs. Wood frames need to be made from species that have naturally high durability or be treated to prevent decay and deformation.
This can result in gaps that allow air seepage unless good draught sealing (weather stripping) is set up. u, PVC is a form of plastic (unplasticised polyvinyl chloride, also referred to as stiff PVC). u, PVC frames offer outstanding thermal efficiency, typically better than wood or thermally damaged aluminium. u, PVC is long lasting and requires really little maintenance, and can be moulded into complex profiles that provide exceptional air seals.
u, PVC windows and doors have exceptional thermal performance Photo: Ben Wrigley (Light House Architecture and Science) Composite frames use aluminium profiles on the outer areas with either a wood or u, PVC inner area. These combine the low maintenance and resilience of aluminium with much improved thermal performance.
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